programming Security & Privacy — 217 tools curated by the community. Most popular: extensible-mcp, Noctovisor, Malinois. Each tool comes with a review, tags and alternatives to help you choose.
❓ Frequently asked questions about Security & Privacy
What is Security & Privacy?
Security & Privacy groups 217 tools curated by the mySelectas community. Most popular: extensible-mcp.
What are the best free Security & Privacy tools?
mySelectas lists several free options in this category. See in particular: extensible-mcp, Noctovisor, Malinois.
The short version: the core idea here — enforce security with deterministic code instead of persuading the model to behave — is the right instinct as agentic systems get more tool access, and this is one of the first concrete implementations of it for MCP specifically.
Connecting an LLM directly to MCP servers with no proxy means access control lives entirely in the system prompt, which is fundamentally not a security boundary — a sufficiently adversarial input can talk a model into calling something it shouldn't. Commercial LLM gateways like Portkey add policy and routing controls at the API…
👥 Target audience
Équipes déployant des systèmes agentiques exposant des serveurs MCP à un LLM et voulant un contrôle d'accès déterministe plutôt que basé sur le prompt.
🌍 Target countries
Marché anglophone, écosystème IA/MCP international
🗣️ Available languages
EN
🔄 Alternatives
Connexion MCP directe sans proxyPortkey (passerelle LLM générale)
The short version: Noctovisor replaces the annual vendor-risk questionnaire with continuous, dated, source-linked monitoring — a real improvement for compliance teams, at a price that puts it firmly in enterprise-budget territory.
Third-party risk management has an established enterprise tier (OneTrust, Prevalent, UpGuard) that typically bundles vendor questionnaires, security ratings, and risk scoring into broader GRC platforms costing tens of thousands of dollars a year. Noctovisor's angle is narrower and more specific: automated public-records and court-filing monitoring mapped directly on…
👥 Target audience
Institutions financières, organisations régulées et entreprises ayant besoin de diligence raisonnable documentée sur leurs tiers/fournisseurs
The short version: Malinois does one narrow job — proving whether your unattended device was touched — and does it with an unusually transparent, published threat model for a one-person side project.
Purpose-built "leave my device and know if it was touched" apps are a thin category; the closer comparisons are general anti-theft/Find My tools (which track a stolen device after the fact but don't prove tampering while it sat unattended) or DIY tripwire setups built from smart-home sensors. Malinois's differentiator is a published, testable threat model (SECURITY.md, unit tests pinned to securi…
👥 Target audience
Utilisateurs soucieux de la sécurité physique de leur appareil, personnes laissant régulièrement un téléphone/laptop sans surveillance (hôtel, bureau partagé, voyage)
🌍 Target countries
International (App Store, disponible partout où l'App Store le distribue)
🗣️ Available languages
EN
🔄 Alternatives
Find My (Apple)Capteurs de tripwire DIY (maison connectée)Applications anti-vol génériques
The short version: a narrow but genuinely novel tool for a real problem — almost nothing else offers cryptographic, non-repudiable proof that a computational result was produced by specific code, hardware, and timing.
There's no direct competitor doing exactly this; the closest comparisons are general reproducibility practices (containerized environments, experiment-tracking tools like MLflow) which record what ran but don't cryptographically prove it wasn't altered afterward. K-Veritas's edge is that signed, tamper-evident proof; the cost is a steep learning curve and a niche audience — this…
👥 Target audience
Chercheurs et praticiens ML ayant besoin d'une preuve de reproductibilité non répudiable pour publication ou revue par les pairs.
🌍 Target countries
Marché anglophone, communauté académique internationale
🗣️ Available languages
EN
🔄 Alternatives
MLflow (suivi d'expériences, sans preuve cryptographique)Environnements conteneurisés/Docker figésPratiques manuelles de documentation de reproductibilité
The short version: License Detector's core differentiator — actually reading license text instead of trusting declared metadata — is a legitimate advantage over most open-source license scanners, and the free CLI alone is enough for most individual developers or small teams.
FOSSA and Black Duck are the established enterprise-grade options, with mature dashboards, legal-team workflows, and broad ecosystem coverage, but they're commercial products with enterprise pricing to match. ScanCode Toolkit is the closest free/open-source peer in spirit — it also does deep license-text analysis rather t…
👥 Target audience
Développeurs, équipes DevOps, équipes conformité, entreprises gérant des dépendances open source
The short version: MCP Locker addresses a real, timely pain point — the awkward mix of local and self-hosted setups most people currently use to run MCP servers — with a simpler, single hosted endpoint.
Against fully self-hosted MCP infrastructure (Railway, Render) or running everything locally through Claude Desktop, MCP Locker's differentiator is consolidation: one private, Cloudflare-backed endpoint instead of managing separate deployments and exposure for each MCP server you run. The honest gap is transparency — pricing isn't clearly published, feature documentation on the homepage is thi…
👥 Target audience
Développeurs indépendants, ingénieurs IA et utilisateurs techniques ayant besoin d'héberger et de gérer des serveurs MCP en privé pour Claude et d'autres applications IA.
The short version: Inth is a smart, developer-native answer to a problem that usually gets caught too late — a privacy issue shipped in a pull request, discovered months later during an audit or a complaint.
Its real differentiator against compliance heavyweights like Vanta or OneTrust, which mostly work at the company/policy level with periodic audits, is operating at the code and product level continuously — checking every PR and every website change as it happens, which is a genuinely different (and more preventive) approach than annual compliance checklists. Being YC-backed and shipping a…
👥 Target audience
Développeurs, équipes privacy/sécurité, équipes légales et plateformes ayant besoin d'une revue de conformité continue avant mise en production
The short version: VibeGuard fills a real, narrow niche, catching the specific bad habits AI coding tools produce, and its zero-config setup and plain-English grading make it easy to try, but it's a two-star project competing against much more established general-purpose scanners.
Bandit and Semgrep already catch most of the same vulnerability classes (SQL injection, hardcoded secrets, command injection) with far larger, battle-tested rule sets and broader language support; VibeGuard's pitch is being tuned specifically to AI-generated code patterns and giving letter-grade, plain-English outpu…
👥 Target audience
Développeurs utilisant des assistants IA de code, équipes DevSecOps
The short version: this tool does exactly what paid data-removal services do, using the same free official opt-out forms, but for free and with your data staying local, worth using if you're willing to run it yourself instead of paying a subscription.
Services like DeleteMe or Incogni charge ongoing monthly or annual fees to do this exact same opt-out-form-filing work on your behalf, often as their entire business model; this tool's whole pitch is that those forms are free and public, so paying recurring fees for something scriptable is money you don't need to spend. The trade-off is that it …
👥 Target audience
Particuliers soucieux de leur vie privée, résidents de Californie, agents IA
🌍 Target countries
International (fonctionnalités spécifiques pour la Californie)
The short version: AgentGate addresses a real and growing risk, AI agents holding raw API credentials, with a sound architecture (token vault plus signed audit trail), but it's a brand-new open-source project with no adoption history yet.
There's no widely established direct competitor doing exactly this token-brokering-for-agents pattern yet, most teams today just hand agents raw tokens and hope for the best, or build ad-hoc credential scoping themselves. AgentGate's cryptographic, offline-verifiable audit receipts are a genuinely useful compliance feature that homegrown solutions rarely bot…
👥 Target audience
Développeurs intégrant des agents IA dans des environnements d'entreprise, organisations avec exigences d'audit
🌍 Target countries
International
🗣️ Available languages
EN
🔄 Alternatives
Gestion manuelle de tokens APIVault + scripts maison
The short version: SecURL is a decent free starting point for a quick external security check, but it's thin on documented detail compared to established scanners, so treat its grade as a first signal, not a full audit.
Tools like Mozilla Observatory, SSL Labs, and SecurityHeaders.com cover similar ground, external, no-signup security grading, with more transparent methodology and a longer track record; SecURL's advantage is mainly being free and simple, but without clear documentation of what exactly it checks, it's hard to know how much to trust a passing grade. Fine for a quick sanity chec…
👥 Target audience
Propriétaires de sites, équipes sécurité voulant un check rapide
The short version: Leadcode solves a real, specific pain for freelancers and agencies, accidentally using the wrong client's credentials, and it does it well, but it's macOS-only and worth the $12/month mainly once you're juggling three or more active clients.
There isn't a direct competitor doing exactly this; most freelancers cobble together shell profiles, direnv, or separate machine users to achieve rough credential isolation manually, which is fragile and easy to get wrong under deadline pressure. Leadcode's fail-closed design, it refuses to guess rather than silently using the wrong acc…
👥 Target audience
Développeurs freelance et agences gérant plusieurs clients
🌍 Target countries
International
🗣️ Available languages
EN
🔄 Alternatives
direnv + scripts maison1Password CLIgh auth switch manuel
The short version: Husk is a solid, free, privacy-respecting scanner for catching supply-chain risk before it lands in your codebase, useful, but it's a young project competing against much larger incumbents.
Snyk and Dependabot both do dependency vulnerability scanning with far bigger vulnerability databases, paid enterprise tiers, and years of coverage; Husk's edge is that it runs 100% locally with zero network calls and zero account, which matters if you're security-conscious about even sending metadata off-machine, and its MCP server integration is a genuinely useful angle for teams wirin…
👥 Target audience
Développeurs et équipes sécurité soucieux de confidentialité, utilisateurs d'agents IA/MCP
The short version: DOMOxide is a credible, much faster alternative to DOMPurify for teams that sanitize a lot of HTML and feel the performance cost, but it's young and less battle-tested.
DOMPurify has years of production hardening across huge numbers of sites; DOMOxide is newer, and passing 218/219 of DOMPurify's test suite is reassuring but not identical to DOMPurify's own track record against real-world attack payloads discovered over a decade. The performance claim (~70x) is real for CPU-bound sanitization at scale, think user-generated content platforms processing thousands of documents,…
👥 Target audience
Développeurs web ayant besoin de sanitiser du HTML utilisateur, en particulier à fort volume
The short version: this is a genuinely useful niche tool for anyone stuck without Apple's own Keychain client on Linux, but it's an unofficial reverse-engineered client with real dependency and trust trade-offs to weigh.
There's no official alternative, Apple simply doesn't ship Linux software for this, so the practical comparison is against not having Keychain access at all, or switching to a fully cross-platform manager like Bitwarden or 1Password instead. Because it depends on reverse-engineered Apple device attestation (anisette-v3-server) to work, it's inherently more fragile to Apple-si…
👥 Target audience
Utilisateurs Linux ayant des mots de passe stockés dans iCloud Keychain
The short version: Conduct AI is aimed squarely at companies that want to let AI agents work autonomously but need a paper trail and guardrails for compliance, and it's free and open source if you self-host.
It competes loosely with Guardrails AI and NVIDIA's NeMo Guardrails, both of which focus more narrowly on validating LLM outputs, and with LiteLLM Proxy, which routes and logs LLM calls but doesn't ship compliance packs or a policy engine out of the box. Conduct AI's edge is bundling governance, audit trails, and ready-made compliance frameworks together, which matters a lot once regulate…
👥 Target audience
Responsables ingénierie, équipes IT/sécurité et conformité déployant des agents IA à grande échelle
The short version: Grith is one of the more serious attempts at actually sandboxing what AI coding agents can do at the operating-system level, not just at the prompt level, a sensible free layer of protection if you're letting agents run with real system access.
Broader sandboxing tools like Firejail, gVisor, or plain seccomp and SELinux policies can restrict what a process does, but none of them are purpose-built for the specific risk patterns of AI coding agents, accidental secret leaks, unexpected destructive git or file operations, agents making network calls they shouldn't. Grith's 18 p…
👥 Target audience
Équipes de développement et entreprises exécutant des agents de codage IA nécessitant une supervision au niveau OS
The short version: if your security team already worries about employees leaking data into AI chatbots and separately worries about credential/PAM hygiene and physical shoulder-surfing, Trustity consolidates all three concerns into one agent and one dashboard instead of three separate vendor contracts.
The GenGuard module — blocking sensitive pastes into GenAI tools before they leave the device — is the most timely piece here, addressing a real and growing 2026 enterprise risk that older DLP vendors weren't built for. Bundling that with PAM/secrets management and physical-camera detection (Vi…
👥 Target audience
Équipes IT/sécurité d'entreprise gérant des parcs Windows et Linux, petites structures à grandes entreprises
The short version: if your organization already runs on Microsoft Entra ID and has been putting off a proper PAM rollout because legacy vendors mean months of professional-services engagements, Huntoso's pitch — real PAM in about 10 minutes, natively on infrastructure you already have — directly targets that friction.
The legacy PAM market (CyberArk, BeyondTrust, Delinea) is notorious for expensive, slow, infrastructure-heavy deployments, and "cloud-native, Entra-ID-first, no infrastructure to stand up" is a real and credible differentiation angle rather than marketing fluff, given how much o…
👥 Target audience
Entreprises régulées utilisant Microsoft Entra ID, cherchant conformité HIPAA/SOC2/NIST rapide
The short version: if you need to search public domain and SSL certificate data without paying for a SecurityTrails or Censys subscription, DNSniffer is a genuinely useful free alternative, though it's younger and less proven than the established players.
DNSniffer's core pitch — treating CT logs and zone files as a commodity rather than a premium product — is a real point of differentiation against tools like SecurityTrails, Censys, or crt.sh's raw interface, all of which either gate bulk access behind paid tiers or require technical comfort with raw certificate data. DNSniffer wraps that sa…